MOSCOW -- The Russian Federal Service for Military-Technical Cooperation denied allegations of an arms deal with Iran regarding air defense systems.

The statement said Russia isn't discussing the delivery of the S-300 interceptor missile system with Iran contrary to media reports, RIA Novosti said Friday.

"The issue of the delivery of S-300 air defense missile systems to Iran, raised by the media, is not a subject of current negotiations and has not been discussed with the Iranians," the statement read.

The United States issued demands to Russia to cease weapons deals with countries Washington views with mistrust.

Russian President Vladimir Putin said in October, however, that Russia wouldn't entertain arms restrictions "based on unilateral and politicized assessments".

Russia and Iran negotiated the sale of the 29 Tor-M1 missile defense system in January.